Nut-lock.



No. 717,424. Patented Dec. 3u, |9o2.

, J. E. MONTGOMERY.

NUT LOCK.

(Application filed Apr. 9, 1902.}

mo Model.)

,IIH' Illll' UNITED STATES PATENT OEEI'cE.

JAMES E. MONTGOMERY, OF SALTSBURG, PENNSYLVANIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 717,431, dated December30, 1902.. Application filed April 9, 1902. Serial N0. 102,032. (Nomodel.)

To (0% whom it may concern:

Beit known thatI, JAMES E. MONTGOMERY, a citizen of the United States ofAmerica, residing at Saltsburg, in the county of Indiana and State ofPennsylvania, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvements innut-locks, and has for its object the provision of novel means whereby anut is securelylocked to a bolt and prevented from turningthereon.

Another object of the invention is to provide a device of the abovedescribed character that is particularly adapted to be used for railwayconstructions or may also be advantageously used for steel constructionsof all kinds.

A still further object of the present invention is to provide a devicethat will be extremely simple in construction, strong, durable,comparatively inexpensive to man ufacture, and highly efficient in itsuse.

With the above and other objects in viewthe invention consists in thenovel construction, combination, and arrangement of parts, to behereinafter more fully described, and specifically pointed out in theclaim.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate like parts throughout the severalviews, in which- Figure 1 is a vertical sectional view of my improvednut-lock applied to a rail. Fig. 2.. is a side elevation of thefish-plate. Fig. 3 is a perspective and rear view of one of the washers.Fig. 4: is a side elevation of the nut. Fig. 5 is a side elevation ofthe locking washer. Fig. 6 is aside elevation of my improved nut-lockapplied to the fish -plate, showing the same in a locked position. Fig.7 is a detail perspective view taken on the line 7 7 of Fig-5.

In the drawings I have illustrated my improved nut-lock applied to arail, and the reference-numeral 1 indicates the rail, and 2 thefish-plate, said rails and fish-plates carrying aperture 3, throughwhich passes a bolt 4, carrying a head 5. The fish-plate 2 carries agroove 6 upon its outer face to receive the lugs 7, carried by a washer8.

The reference-numeral 9 indicates a nut which secures the washer 8 inposition upon the bolt 4.

The reference-numeral 10 represents a securing-washer which has bevelededges 11, its inner edges having the corners cut away, as indicated at12, said cut-away portion forming a seat 14..

The operation of locking my improved nutlock is as follows: The bolthaving been inserted through the rail and fish-plates, the washer 8 isplaced upon the bolt, the lugs 7 engaging the groove 6, and then the nut9 is screwed upon the bolt. The securing-washer 10 is then placed overthe bolt and nut, said washer fitting the washer and nut 8 and 9 snugly,and then the nut 9 is turned slightly back until the edges or corners ofsaid nut engage in the seat 14 of the securing-washer 10, therebypreventing the same from working its way off the bolt or from becomingmore tightly secured upon the same. It will be noted that my improvednut-lock may be applied to structural steel and thelike, wherein agroove has been made for the reception of a washer carrying lugs.

The many advantages obtained by the use of my improved device will bereadily apparent from the foregoing description, taken in connectionwith the accompanying drawings.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a nut-lock, the combination with the rail and fish-plates one of saidfish-plates having a groove formed in its face, of a square washercarrying lugs engaging said groove, a nut securing said washer inposition, a securingwasher having a square opening the edges of whichengage the straight sidesofthe-firstnamed washer, seats formed in theupper corners of said securing-washer, andhavinghorizontally-disposedbases flush with the upper face of said first-namedwasher when in alocked position, substantially as described.

In testimony whereof I affix my signature in the presence of twowitnesses.

JAMES E. MONTGOMERY. Witnesses:

PETER A. WAUGAMAN, B. S. KELLY.

